UFG1A331MPM1TD Equivalent & Substitute Parts

Part Overview

The UFG1A331MPM1TD is a 330 µF, 10 V aluminum electrolytic capacitor in radial configuration manufactured by Nichicon. This component is classified as Obsolete, indicating it is no longer in active production. The UFG series provides 1000 hours of operational life at 85°C and is designed for audio applications. Due to its obsolete status, equivalent and substitute parts from active or alternative product lines are necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	10 V
Tolerance	±20%
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Lead Spacing	0.197" (5.00 mm)
Package Diameter	0.394" (10.00 mm)
Height (Seated Max)	0.551" (14.00 mm)
Mounting Type	Through Hole Radial
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the UFG1A331MPM1TD is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 10 V minimum (higher voltage ratings are acceptable as they provide backward compatibility)
Tolerance: ±20% (standard tolerance maintained)
Lead Spacing: 0.197" (5.00 mm) (mechanical fit requirement)
Package Diameter: 0.394" (10.00 mm) (PCB footprint compatibility)
Mounting Type: Through Hole Radial (form factor requirement)
Polarization: Polar (functional requirement)

Substitution Categories:

Direct Substitutes (Same Voltage Rating - 10 V): Parts maintaining identical voltage rating with equivalent or superior lifetime ratings.
Voltage-Upgraded Substitutes (Higher Voltage Rating): Parts rated at 16 V, 25 V, or 35 V with 330 µF capacitance. These provide enhanced voltage margin and are electrically compatible in 10 V applications.
Enhanced Lifetime Substitutes: Parts with extended operational life at elevated temperatures, suitable for applications requiring improved reliability.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance	Voltage	Lifetime @ Temp	Operating Temp Range	Product Status	Ripple Current @ 120 Hz
UFG1A331MPM1TD	Nichicon	UFG	330 µF	10 V	1000 Hrs @ 85°C	-40°C ~ 85°C	Obsolete	247 mA
UFW1E331MPD1TD	Nichicon	UFW	330 µF	25 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	420 mA
UFW1V331MPD1TD	Nichicon	UFW	330 µF	35 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	470 mA
UBT1A331MPD8TD	Nichicon	UBT	330 µF	10 V	5000 Hrs @ 125°C	-40°C ~ 125°C	Active	310 mA
UBW1A331MPD1TD	Nichicon	UBW	330 µF	10 V	2000 Hrs @ 135°C	-55°C ~ 135°C	Active	310 mA
UBW1C331MPD1TD	Nichicon	UBW	330 µF	16 V	2000 Hrs @ 135°C	-55°C ~ 135°C	Active	340 mA
UHE1E331MPD6TD	Nichicon	UHE	330 µF	25 V	7000 Hrs @ 105°C	-40°C ~ 105°C	Not For New Designs	605.5 mA
UKA1V331MPD1TD	Nichicon	UKA	330 µF	35 V	2000 Hrs @ 105°C	-55°C ~ 105°C	Not For New Designs	350 mA
UKL1A331MPD1TD	Nichicon	UKL	330 µF	10 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	400 mA
UKW1E331MPD1TD	Nichicon	UKW	330 µF	25 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	420 mA
UKW1V331MPD1TD	Nichicon	UKW	330 µF	35 V	2000 Hrs @ 85°C	-40°C ~ 85°C	Not For New Designs	470 mA

Engineering Selection Recommendations

Active Product Line (Recommended for New Designs):

The UBT1A331MPD8TD and UBW1A331MPD1TD represent the current active alternatives from Nichicon. Both maintain 330 µF capacitance at 10 V with superior lifetime ratings and extended operating temperature ranges. The UBT1A331MPD8TD offers 5000 hours at 125°C, while the UBW1A331MPD1TD extends to -55°C lower bound and 135°C upper bound with 2000 hours lifetime. Both are ROHS3 compliant and suitable for long-term procurement strategies.

Voltage-Upgraded Alternatives (Existing Inventory):

The UFW1E331MPD1TD (25 V) and UFW1V331MPD1TD (35 V) provide doubled lifetime (2000 hours at 85°C) compared to the UFG1A331MPM1TD while maintaining identical mechanical form factor. These are classified as "Not For New Designs" but remain available in inventory. Higher voltage ratings ensure backward compatibility in 10 V applications with improved voltage margin.

Extended Lifetime Options:

The UHE1E331MPD6TD delivers 7000 hours at 105°C with 25 V rating, providing the highest reliability option among available substitutes. This part is suitable for applications requiring extended operational life in elevated temperature environments.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V or 35 V rated capacitor in place of the 10 V UFG1A331MPM1TD?

A: Yes. Higher voltage-rated capacitors are electrically compatible in lower voltage applications. A 25 V or 35 V capacitor will function correctly in a 10 V circuit, providing additional voltage margin and typically improved reliability. Mechanical compatibility (lead spacing, package diameter, height) must be verified.

Q: What is the difference between "Obsolete" and "Not For New Designs" product status?

A: Obsolete parts are no longer manufactured and existing inventory is limited. "Not For New Designs" parts remain in production but are being phased out in favor of newer alternatives. For new designs, select parts with "Active" status such as UBT1A331MPD8TD or UBW1A331MPD1TD.

Q: Are all substitute parts mechanically identical to the UFG1A331MPM1TD?

A: All listed substitutes maintain the same lead spacing (0.197" / 5.00 mm), package diameter (0.394" / 10.00 mm), and through-hole radial mounting configuration. Height variations exist: UFG and UFW/UKW/UKL series are 0.551" (14.00 mm), while UBT and UBW automotive series are 0.571" (14.50 mm). Verify PCB clearance for the taller automotive variants.

Q: Which substitute offers the best long-term reliability?

A: The UHE1E331MPD6TD provides 7000 hours at 105°C, the highest lifetime rating among available options. For automotive applications requiring extended temperature range, the UBW1A331MPD1TD offers 2000 hours at 135°C with operating range of -55°C to 135°C.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the environmental certification of the original UFG1A331MPM1TD.

Q: What ripple current specifications should I consider when selecting a substitute?

A: Ripple current capacity varies among substitutes. The UFG1A331MPM1TD is rated at 247 mA @ 120 Hz. Higher-rated alternatives such as UHE1E331MPD6TD (605.5 mA @ 120 Hz) and UFW1V331MPD1TD (470 mA @ 120 Hz) provide greater ripple current handling. Select a substitute with ripple current rating equal to or exceeding your application requirement.

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